Bupropion vs Sildenafil

## Bupropion vs Sildenafil: Overview

This comparison examines the pharmacological differences between **Bupropion** and **Sildenafil**.

## Mechanism of Action

**Bupropion**: Norepinephrine-dopamine reuptake inhibitor (NDRI).

**Sildenafil**: Selective PDE5 inhibitor increasing cGMP.

## Pharmacokinetics

**Half-life**: Bupropion — 21 hours; Sildenafil — 4 hours.

## Chemical Properties

**Molecular Formula**: Bupropion — C13H18ClNO; Sildenafil — C22H30N6O4S.

**Molecular Weight**: Bupropion — 239.7420 g/mol; Sildenafil — 474.5800 g/mol.

**Type**: Bupropion — Small molecule; Sildenafil — Small molecule.